package cn.xzchain.concurrency.count;

import cn.xzchain.concurrency.annoations.NotThreadSafe;
import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.*;

/**
 * @author lihang
 * @date 2018/5/7.
 * @description
 */
@Slf4j
@NotThreadSafe
public class Count1 {

    /**请求总数*/
    public static int clientTotal = 5000;
    /**同时并发执行的线程数*/
    public static int threadTotal = 200;

    public static int count = 0;

    public static void main(String[] args) throws InterruptedException {
        ExecutorService executorService = new ThreadPoolExecutor(200,200,0L,TimeUnit.SECONDS,new LinkedBlockingQueue<>());
        final Semaphore semaphore = new Semaphore(threadTotal);
        final CountDownLatch countDownLatch = new CountDownLatch(clientTotal);
        for (int i =0;i<clientTotal;i++){
            executorService.execute(() -> {
                try{
                    semaphore.acquire();
                    add();
                    semaphore.release();
                }catch (Exception e){
                    log.error("exception:",e);
                }
                countDownLatch.countDown();
            });
        }
        countDownLatch.await();
        executorService.shutdown();
        log.info("count:{}",count);
    }

    private static void add(){
        count++;
    }
}
